66 lines
1.6 KiB
C
66 lines
1.6 KiB
C
/*
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* Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
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* Copyright 2003 PathScale, Inc.
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* Derived from include/asm-i386/pgalloc.h and include/asm-i386/pgtable.h
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* Licensed under the GPL
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*/
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#ifndef __UM_PGALLOC_H
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#define __UM_PGALLOC_H
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#include "linux/config.h"
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#include "linux/mm.h"
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#include "asm/fixmap.h"
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#define pmd_populate_kernel(mm, pmd, pte) \
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set_pmd(pmd, __pmd(_PAGE_TABLE + (unsigned long) __pa(pte)))
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#define pmd_populate(mm, pmd, pte) \
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set_pmd(pmd, __pmd(_PAGE_TABLE + \
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((unsigned long long)page_to_pfn(pte) << \
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(unsigned long long) PAGE_SHIFT)))
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/*
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* Allocate and free page tables.
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*/
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extern pgd_t *pgd_alloc(struct mm_struct *);
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extern void pgd_free(pgd_t *pgd);
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extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long);
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extern struct page *pte_alloc_one(struct mm_struct *, unsigned long);
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static inline void pte_free_kernel(pte_t *pte)
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{
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free_page((unsigned long) pte);
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}
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static inline void pte_free(struct page *pte)
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{
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__free_page(pte);
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}
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#define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))
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#ifdef CONFIG_3_LEVEL_PGTABLES
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/*
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* In the 3-level case we free the pmds as part of the pgd.
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*/
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#define pmd_free(x) do { } while (0)
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#define __pmd_free_tlb(tlb,x) do { } while (0)
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#endif
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#define check_pgt_cache() do { } while (0)
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#endif
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/*
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* Overrides for Emacs so that we follow Linus's tabbing style.
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* Emacs will notice this stuff at the end of the file and automatically
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* adjust the settings for this buffer only. This must remain at the end
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* of the file.
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* ---------------------------------------------------------------------------
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* Local variables:
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* c-file-style: "linux"
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* End:
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*/
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